Activision has announced that GameStop will be hosting a special DJ Hero demo event this Sunday, October 11. The event is taking place at all United States GameStop locations from 10:00am to 6:00pm, and will give gamers the chance to try out the game a full three weeks in advance. Gamers will also have the opportunity to win prizes, including a trip to meet Eminem and see him perform in New Orleans. Naturally, a few copies of the game and some Xbox 360s will be up for grabs as well. Oh, and before you go, be sure to get a quick primer on the game by reading our recent hands-on impressions. After all, you wouldn't want to embarrass yourself in front of the whole mall. See the full prize details after the break.